CN201161890Y

CN201161890Y - Radial direction positioning type no-load lifting manual lever hoist

Info

Publication number: CN201161890Y
Application number: CNU2007201123061U
Authority: CN
Inventors: 陈树忠; 钱阳天
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-07-27
Filing date: 2007-07-27
Publication date: 2008-12-10
Anticipated expiration: 2017-07-27

Abstract

The utility model relates to a radial positioning type no-load raising hand gourd. The technical characteristics are that a torsional spring is arranged between a reversing ratchet wheel and an adjusting block, the reversing ratchet wheel is effected by certain twisting moment under the no-load condition, which enables the reversing ratchet wheel and a braking component to keep certain frictional force always, thereby achieving no-load raising, since a long axis is matched with the adjusting block through a serration, a steel ball is inserted into a straight flute of a hand wheel through rotating the adjusting block to realize radial positioning, thereby forcing the reversing ratchet wheel and the braking component to be released, realizing that a hoisting chain is rapidly adjusted, and overcoming the defect that when an existing gourd has no load, the reversing ratchet wheel is easily driven by a reversing pawl to lead unavailable no-load raising.

Description

Radial location unloaded Lifting lever blocks

One, technical field

The utility model radial location unloaded Lifting lever blocks is a kind of Lever Blocks that can hoist when idling and can the quick adjusting hoisting chain.

Two, background technology

Lever Blocks as a kind ofly be widely used, small-sized elevator machinery simple to operate, hoisting of it realizes by back and forth shaking handle, but prerequisite is the load that following suspension hook must bear constant weight, if under the no-load situation, following suspension hook just can't be accomplished effectively to hoist, show as down the back and forth also oscilaltion of suspension hook with handle, this is owing to there are not enough weight antagonistic forces, the ratchet that causes commutating comes back rotation with the commutation ratchet, therefore makes Lever Blocks can't accomplish effectively to hoist when no-load; This type of problem does not influence most of users and uses Lever Blocks, because cucurbit is all worked having under the situation of load basically, but to the aerial work of some special industries such as power department and the under-water operation of maritime sector, because specific working environment, need operate Lever Blocks under idling when often beginning, therefore conventional product just seems perfect inadequately.

Three, summary of the invention

At above-mentioned existing problems, the commutation ratchet was easily driven by the commutation ratchet and causes the shortcoming that can't accomplish that no-load hoists when the utility model radial location unloaded Lifting lever blocks had overcome existing cucurbit no-load, provide a kind of can accomplish that no-load hoists and can be when no-load the random radial location unloaded Lifting lever blocks of quick adjustment chain.

The utility model radial location unloaded Lifting lever blocks is mainly by major axis 1, brake component 2, commutation ratchet 3, torsion spring 4, spacer 5, adjust piece 6, spring 7, steel ball 8, handwheel 9 constitutes, its technical characterictic is: commutation ratchet 3 screws in major axis 1, be connected with brake component 2, between commutation ratchet 3 and adjustment piece 6, be provided with torsion spring 4, major axis 1 cooperates with adjustment piece 6 by serration, adjust 6 left ends and be provided with spacer 5, spring 7 and adjustment piece 6, steel ball 8 is contained in the handwheel 9 together, and steel ball 8 goes in the straight trough of handwheel 9 to realize radial location by adjusting piece 6 rotating bezels.The structure of described adjustment 6: be provided with serration in the middle of adjusting piece 6; Adjust in 6 liang of stomidiums of piece and all be respectively equipped with spring 7 and steel ball 8

Advantage of the present utility model is: (one) is owing to be provided with torsion spring 4 between commutation ratchet 3 and adjustment piece 6, commutation ratchet 3 has been subjected to certain torsional interaction when idling, make between commutation ratchet 3 and the brake component 2 and remain certain static friction power, thereby can accomplish that no-load hoists.(2) because major axis 1 cooperates with adjustment piece 6 by serration, steel ball 8 goes in the straight trough of handwheel 9 to realize radial location by adjusting piece 6 rotating bezels, therefore can throw off with brake component 2 by forced reversing ratchet 3, thereby can realize the quick adjustment hoisting chain.

Four, description of drawings

Fig. 1 is a radial location unloaded Lifting lever blocks.1 major axis, 2 brake components, 3 commutation ratchets, 4 torsion springs, 5 spacers, 6 are adjusted piece, 7 springs, 8 steel balls, 9 handwheels among the figure.

Illustrate: Fig. 1 radial location unloaded Lifting lever blocks, major axis 1 is heart position therein, right-hand member pack into brake component 2, the commutation ratchet 3, at commutation ratchet 3 right-hand member hole internal fixation torsion springs 4, successively adorn spacer 5, adjust to insert after piece 6, torsion spring 4 other ends are turned round give part of a turn earlier and adjust piece 6, spring 7, steel ball 8 are packed into and are adjusted piece 6 backs and pack in the handwheel 9 by compression.

Five, the specific embodiment

In conjunction with Fig. 1 the installation and the use of utility model radial location unloaded Lifting lever blocks are further specified: earlier commutation ratchet 3 is screwed in the major axis 1 during installation, handwheel 9 is installed again, spacer 5, torsion spring 4 one ends are fixed in the commutation ratchet 3 right-hand member holes, the other end inserts the aperture of adjusting piece 6 after turning round give part of a turn, commutation ratchet 3 is close to brake component 2 under the torsion spring twisting force all the time, adjust pack in advance respectively in 6 liang of stomidiums of piece spring 7 and steel ball 8, adjusting piece 6 cooperates by serration according to the windup-degree of torsion spring 4 and major axis 1, and in the handwheel 9 of packing into together, keep the steel ball 8 and the straight trough of handwheel 9 that certain angle is arranged, this moment, operating handle can realize that no-load hoists; When rotate adjusting piece 6 and make steel ball 8 submerge the straight trough of handwheel 9, commutation ratchet 3 is just thrown off brake component 2, and can realize the quick adjusting of hoisting chain this moment.

Claims

1, radial location unloaded Lifting lever blocks, comprise major axis (1), brake component (2), commutation ratchet (3), torsion spring (4), spacer (5), adjust piece (6), spring (7), steel ball (8), handwheel (9) constitutes, the ratchet (3) that it is characterized in that commutating screws in major axis (1), be connected with brake component (2), between commutation ratchet (3) and adjustment piece (6), be provided with torsion spring (4), major axis (1) cooperates with adjustment piece (6) by serration, adjust piece (6) left end and be provided with spacer (5), spring (7) and adjustment piece (6), steel ball (8) is contained in the handwheel (9) together, and steel ball (8) goes in the straight trough of handwheel (9) to realize radial location by adjusting piece (6) rotating bezel.

2, pressing claims 1 described radial location unloaded Lifting lever blocks, it is characterized in that the structure of described adjustment piece (6), is to adjust in piece (6) two stomidiums all to be respectively equipped with spring (7) and steel ball (8), adjusts the middle serration that is provided with of piece (6).